Oxygen concentrator



FIG. 1 is a front perspective view of a first embodiment of the oxygenconcentrator.

FIG. 2 is a rear perspective view of the oxygen concentrator in FIG. 1.

FIG. 3 is a front view of the oxygen concentrator in FIG. 1.

FIG. 4 is a rear view of the oxygen concentrator in FIG. 1.

FIG. 5 is a left side view of the oxygen concentrator in FIG. 1.

FIG. 6 is a right side view of the oxygen concentrator in FIG. 1.

FIG. 7 is a top view of the oxygen concentrator in FIG. 1.

FIG. 8 is a bottom view of the oxygen concentrator in FIG. 1.

FIG. 9 is a front perspective view of a second embodiment of the oxygenconcentrator.

FIG. 10 is a rear perspective view of the oxygen concentrator in FIG. 9.

FIG. 11 is a front view of the oxygen concentrator in FIG. 9.

FIG. 12 is a rear view of the oxygen concentrator in FIG. 9.

FIG. 13 is a left side view of the oxygen concentrator in FIG. 9.

FIG. 14 is a right side view of the oxygen concentrator in FIG. 9.

FIG. 15 is a top view of the oxygen concentrator in FIG. 9; and,

FIG. 16 is a bottom view of the oxygen concentrator in FIG. 9.

The broken lines are for illustrative purposes only and form no part ofthe claimed design.

CLAIM The ornamental design for the oxygen concentrator, as shown anddescribed.